Books like Deep Blue
Jennifer Donnelly, Bea Miller
Deep Blue is 352 pages, about 6 hours 27 minutes at 250 words a minute.
12 books to read next
How long each takes
Poor Unfortunate Soul 3.8 h 
City of Ashes 8.3 h 
Amulet 4.1 h 
Half Wild 7.0 h 
City of Lost Souls 10.9 h 
Peter Pan 1.8 h 
Harry Potter and the Cursed Child 6.3 h 
The School for Good and Evil 9.1 h 
Gone 10.4 h 
The Last Battle 3.5 h 
Crescendo 7.5 h 
The Silver Chair 4.0 h Bar height shows length. Estimated at 250 words a minute.